4.
4.2.2-GB
Motor protection - and switching unit
Switching unit for 3~ motors with two speeds
(Y/▲ change-over)
Type:
S-DT2S(K)T
Examples of applications for switching 3~ fans in two steps
Manual 2-step speed change-over (Y/▲) of one or more 3~ fans e. g. in:
heat exchangers (as warm-air heaters), hoods, ventilation of rooms.
- Via potential-free contact (e. g. of thermostat type SRE1G) the device can be switched ON / OFF in the
preselected step. Thus simple temperature control is accomplished.
- Type S-DT2SKT includes potential-free and 230 V power on contacts for the connection of damper control
motors or gas valves (hoods application) (see connection example on back).
Equipment
Enclosed version IP 54
· Restart the drive unit after cooling by switching off and back on
Type: S-DT2ST Part-No. 301024
Type: S-DT2SKT Part-No. 301034 (add. contacts)
· Remote control (ON/OFF) via potential-free contact
(terminals ”RT”-”RT”).
· Motor protection using thermocontact connection (terminals
"TK"-"TK"). Automatic switch-off by motor over-temperature.
Restart after cooling the drive unit by switch-off and after that
switch on the mains voltage or by step-switch ("reset").
· A power on lamp and a control fuse are integrated.
· Automatic switch on after power failure.
· Type S-DT2SKT (additional power on contacts)
- Potential-free changer (terminals 11, 12, 14)
- 230 V switched and constant voltage
Technical data
- Line voltage 3~ 400 V, 50/60 Hz
- Max. contact load (type S-DT2SKT)
× Potential-free changer (terminals 11, 12, 14) 250 V AC / 2 A
× 230 V switched and constant voltage max. 1 A
- Rated current 10 A
- Max. power of motor 4 kW
- Protection class IP54
- Max. line fuse 10 A
- Weight approx. 1.1 kg
- Internal equipment fuse T 2 A (5x 20 mm)
- Max. ambient temperature + 40° C
Dimension sheet
Ziehl-Abegg AG
Heinz-Ziehl-Straße
D-74653 Künzelsau
TIL02_47 (21.10.02)
- Plastic housing (ABS)
× top: light grey RAL 7035
× bottom: dark-grey marbled UN 7005
Connection diagram
Tel.: +49 (0) 7940 16-0
Fax: +49 (0) 7940 16-200
info@ziehl-abegg.de
http://www.ziehl-abegg.de
Connection example for damper control motors
Connection of damper control motors (different models) is possible via the potential-free contacts or via
the 230 V contacts of the power on relay. This relay rises, if the device is activated and the fan is running.
By switching off via remote control (terminals ”RT”-RT”) or in case of motor fault (interruption terminals
”TK”-”TK”) the relay falls off.
For damper control motors with ”single-wire-control” connection with constant voltage (also in switch
position ”0”) for ”damper CLOSE”.
For motors with ”single-wirecontrol”
- damper ”OPEN”: if fan is running,
230 V at terminal L
- damper ”CLOSE”: constant voltage
at terminal L, if fan is not running
(also in switch position ”0”)
AC 230
For motors with ”spring return”
- damper ”OPEN”: if fan is running,
230 V at terminal L
- damper ”CLOSE”: via spring return
(if no voltage at L )
For motors with ”2-wire-control”
- damper ”OPEN”: if fan is running,
voltage at terminal 14
- damper ”CLOSE”: voltage at
terminal 12, fan is not running
(also in switch position ”0”)
AC 230
N
L
L
N
L
L
N
11
12
AC 24 V...250 V
M
TIL02_47 (21.10.02)
M
M
14